[mkgmap-dev] Commit r3864: refactoring, no functional change: rewrite code which was intended to implement a plugin system for OSM readers

Version mkgmap-r3864 was committed by gerd on Fri, 24 Mar 2017 refactoring, no functional change: rewrite code which was intended to implement a plugin system for OSM readers This makes the code more transparent. http://www.mkgmap.org.uk/websvn/revision.php?repname=mkgmap&rev=3864